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with interactive exhibits making science fun. a memory wall is up now where staff and visitors are sharing photos and thoughts about four decades of experiences here. one of those visitors who came back is brian matthews. >> it made a big impression on my childhood. i have vivid memories of it. >> brian is an engineer with autodesk and expert what is known as reality capture. he decided he should be doing it here. >> i called up our friends, like any other experiment they were game. >> he got a few other volunteers and they are working as fast as they can to make a record of the building and exhibits. they are using a couple different technologies including one that starts with photos from a still camera. you take photos from different angles and an amazing software puts them together. >> it can analyze two dimensional pictures, and make a three dimensional model from an ordinary camera. >> they are icing laser scanners. a sophisticated software programmable analyzes the millions of data points and combines them. the image is so detailed it could create an exact replica of the space and everythin
the way scientists test new medicines all at the same time. health and science reporter carolyn johnson explains. >> the doctor believes she's zebra fish to light the way to major drug discoveries. >> the big breakthrough was to use the firefly protein which gives a strong light signal. >> he and his colleagues are part of an international team that's using the zebra fish to screen potential treatments for conditions ranging from obesity to diabetes. they have attached a genetic light switch to a pathway associated the production of glucose or blood sugar. >> meaning when the fish produce glucose in the liver, the light shines up. >>> the result is a fish that can be used as a living, swimming litmus test. the green flow seen in this video is not only visible to researchers, it's also measurable. a brighter lights indicates a higher level of glucose, used as a barometer in research. as one study they zeroed in a potential obesity drug after screening nearly 2500 candidates using the genetically modified fish. >> we put three fish in and add the drug compounds like one per well so we can
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